The notorious and violent MS-13 gang continues to tighten its grip in communities across the United States by tapping into young, vulnerable immigrant children and giving them a sense of family, experts say. MS-13, which originated in Los Angeles in the 1980s, has spread like wildfire to the east coast, growing their numbers most recently by targeting unaccompanied minors who've crossed the southern border. "MS-13 has a powerful marketing strategy in which they offer a family for these children," Angel Melendez, special agent-in-charge of the ICE Homeland Security Investigations unit in New York, told WJLA. MS-13 is believed to have more than 10,000 members in the U.S., a mix of immigrants from Central America and U.S.-born members. ...